1151 lines
26 KiB
C
1151 lines
26 KiB
C
/* capture-wpcap.c
|
|
* WinPcap-specific interfaces for capturing. We load WinPcap at run
|
|
* time, so that we only need one Wireshark binary and one TShark binary
|
|
* for Windows, regardless of whether WinPcap is installed or not.
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 2001 Gerald Combs
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <windows.h>
|
|
#include <wchar.h>
|
|
#include <tchar.h>
|
|
|
|
#include <stdio.h>
|
|
#include <glib.h>
|
|
|
|
#include "caputils/capture-wpcap.h"
|
|
|
|
gboolean has_wpcap = FALSE;
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
|
|
#include <gmodule.h>
|
|
|
|
#include <epan/strutil.h>
|
|
|
|
#include "caputils/capture_ifinfo.h"
|
|
#include "caputils/capture-pcap-util.h"
|
|
#include "caputils/capture-pcap-util-int.h"
|
|
|
|
#include <wsutil/file_util.h>
|
|
|
|
/* XXX - yes, I know, I should move cppmagic.h to a generic location. */
|
|
#include "tools/lemon/cppmagic.h"
|
|
|
|
#define MAX_WIN_IF_NAME_LEN 511
|
|
|
|
/*
|
|
* XXX - should we require at least WinPcap 3.1 both for building an
|
|
* for using Wireshark?
|
|
*/
|
|
|
|
static char* (*p_pcap_lookupdev) (char *);
|
|
static void (*p_pcap_close) (pcap_t *);
|
|
static int (*p_pcap_stats) (pcap_t *, struct pcap_stat *);
|
|
static int (*p_pcap_dispatch) (pcap_t *, int, pcap_handler, guchar *);
|
|
static int (*p_pcap_snapshot) (pcap_t *);
|
|
static int (*p_pcap_datalink) (pcap_t *);
|
|
static int (*p_pcap_setfilter) (pcap_t *, struct bpf_program *);
|
|
static char* (*p_pcap_geterr) (pcap_t *);
|
|
static int (*p_pcap_compile) (pcap_t *, struct bpf_program *, const char *, int,
|
|
bpf_u_int32);
|
|
static int (*p_pcap_compile_nopcap) (int, int, struct bpf_program *, const char *, int,
|
|
bpf_u_int32);
|
|
static int (*p_pcap_lookupnet) (const char *, bpf_u_int32 *, bpf_u_int32 *,
|
|
char *);
|
|
static pcap_t* (*p_pcap_open_live) (const char *, int, int, int, char *);
|
|
static int (*p_pcap_loop) (pcap_t *, int, pcap_handler, guchar *);
|
|
#ifdef HAVE_PCAP_OPEN_DEAD
|
|
static pcap_t* (*p_pcap_open_dead) (int, int);
|
|
#endif
|
|
static void (*p_pcap_freecode) (struct bpf_program *);
|
|
#ifdef HAVE_PCAP_FINDALLDEVS
|
|
static int (*p_pcap_findalldevs) (pcap_if_t **, char *);
|
|
static void (*p_pcap_freealldevs) (pcap_if_t *);
|
|
#endif
|
|
#ifdef HAVE_PCAP_DATALINK_NAME_TO_VAL
|
|
static int (*p_pcap_datalink_name_to_val) (const char *);
|
|
#endif
|
|
#ifdef HAVE_PCAP_DATALINK_VAL_TO_NAME
|
|
static const char *(*p_pcap_datalink_val_to_name) (int);
|
|
#endif
|
|
#ifdef HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION
|
|
static const char *(*p_pcap_datalink_val_to_description) (int);
|
|
#endif
|
|
#ifdef HAVE_PCAP_BREAKLOOP
|
|
static void (*p_pcap_breakloop) (pcap_t *);
|
|
#endif
|
|
static const char *(*p_pcap_lib_version) (void);
|
|
static int (*p_pcap_setbuff) (pcap_t *, int dim);
|
|
static int (*p_pcap_next_ex) (pcap_t *, struct pcap_pkthdr **pkt_header, const u_char **pkt_data);
|
|
#ifdef HAVE_PCAP_REMOTE
|
|
static pcap_t* (*p_pcap_open) (const char *, int, int, int,
|
|
struct pcap_rmtauth *, char *);
|
|
static int (*p_pcap_findalldevs_ex) (char *, struct pcap_rmtauth *,
|
|
pcap_if_t **, char *);
|
|
static int (*p_pcap_createsrcstr) (char *, int, const char *, const char *,
|
|
const char *, char *);
|
|
#endif
|
|
#ifdef HAVE_PCAP_SETSAMPLING
|
|
static struct pcap_samp* (*p_pcap_setsampling)(pcap_t *);
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_LIST_DATALINKS
|
|
static int (*p_pcap_list_datalinks)(pcap_t *, int **);
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_SET_DATALINK
|
|
static int (*p_pcap_set_datalink)(pcap_t *, int);
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_FREE_DATALINKS
|
|
static int (*p_pcap_free_datalinks)(int *);
|
|
#endif
|
|
|
|
#ifdef HAVE_BPF_IMAGE
|
|
static char *(*p_bpf_image)(const struct bpf_insn *, int);
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_CREATE
|
|
static pcap_t *(*p_pcap_create)(const char *, char *);
|
|
static int (*p_pcap_set_snaplen)(pcap_t *, int);
|
|
static int (*p_pcap_set_promisc)(pcap_t *, int);
|
|
static int (*p_pcap_can_set_rfmon)(pcap_t *);
|
|
static int (*p_pcap_set_rfmon)(pcap_t *, int);
|
|
static int (*p_pcap_set_timeout)(pcap_t *, int);
|
|
static int (*p_pcap_set_buffer_size)(pcap_t *, int);
|
|
static int (*p_pcap_activate)(pcap_t *);
|
|
static const char *(*p_pcap_statustostr)(int);
|
|
#endif
|
|
|
|
typedef struct {
|
|
const char *name;
|
|
gpointer *ptr;
|
|
gboolean optional;
|
|
} symbol_table_t;
|
|
|
|
#define SYM(x, y) { G_STRINGIFY(x) , (gpointer) &CONCAT(p_,x), y }
|
|
|
|
void
|
|
load_wpcap(void)
|
|
{
|
|
|
|
/* These are the symbols I need or want from Wpcap */
|
|
static const symbol_table_t symbols[] = {
|
|
SYM(pcap_lookupdev, FALSE),
|
|
SYM(pcap_close, FALSE),
|
|
SYM(pcap_stats, FALSE),
|
|
SYM(pcap_dispatch, FALSE),
|
|
SYM(pcap_snapshot, FALSE),
|
|
SYM(pcap_datalink, FALSE),
|
|
SYM(pcap_setfilter, FALSE),
|
|
SYM(pcap_geterr, FALSE),
|
|
SYM(pcap_compile, FALSE),
|
|
SYM(pcap_compile_nopcap, FALSE),
|
|
SYM(pcap_lookupnet, FALSE),
|
|
#ifdef HAVE_PCAP_REMOTE
|
|
SYM(pcap_open, FALSE),
|
|
SYM(pcap_findalldevs_ex, FALSE),
|
|
SYM(pcap_createsrcstr, FALSE),
|
|
#endif
|
|
SYM(pcap_open_live, FALSE),
|
|
#ifdef HAVE_PCAP_OPEN_DEAD
|
|
SYM(pcap_open_dead, FALSE),
|
|
#endif
|
|
#ifdef HAVE_PCAP_SETSAMPLING
|
|
SYM(pcap_setsampling, TRUE),
|
|
#endif
|
|
SYM(pcap_loop, FALSE),
|
|
SYM(pcap_freecode, TRUE),
|
|
#ifdef HAVE_PCAP_FINDALLDEVS
|
|
SYM(pcap_findalldevs, TRUE),
|
|
SYM(pcap_freealldevs, TRUE),
|
|
#endif
|
|
#ifdef HAVE_PCAP_DATALINK_NAME_TO_VAL
|
|
SYM(pcap_datalink_name_to_val, TRUE),
|
|
#endif
|
|
#ifdef HAVE_PCAP_DATALINK_VAL_TO_NAME
|
|
SYM(pcap_datalink_val_to_name, TRUE),
|
|
#endif
|
|
#ifdef HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION
|
|
SYM(pcap_datalink_val_to_description, TRUE),
|
|
#endif
|
|
#ifdef HAVE_PCAP_BREAKLOOP
|
|
/*
|
|
* We don't try to work around the lack of this at
|
|
* run time; it's present in WinPcap 3.1, which is
|
|
* the version we build with and ship with.
|
|
*/
|
|
SYM(pcap_breakloop, FALSE),
|
|
#endif
|
|
SYM(pcap_lib_version, TRUE),
|
|
SYM(pcap_setbuff, TRUE),
|
|
SYM(pcap_next_ex, TRUE),
|
|
#ifdef HAVE_PCAP_LIST_DATALINKS
|
|
SYM(pcap_list_datalinks, FALSE),
|
|
#endif
|
|
#ifdef HAVE_PCAP_SET_DATALINK
|
|
SYM(pcap_set_datalink, FALSE),
|
|
#endif
|
|
#ifdef HAVE_PCAP_FREE_DATALINKS
|
|
SYM(pcap_free_datalinks, TRUE),
|
|
#endif
|
|
#ifdef HAVE_BPF_IMAGE
|
|
SYM(bpf_image, FALSE),
|
|
#endif
|
|
#ifdef HAVE_PCAP_CREATE
|
|
SYM(pcap_create, TRUE),
|
|
SYM(pcap_set_snaplen, TRUE),
|
|
SYM(pcap_set_promisc, TRUE),
|
|
SYM(pcap_can_set_rfmon, TRUE),
|
|
SYM(pcap_set_rfmon, TRUE),
|
|
SYM(pcap_set_timeout, FALSE),
|
|
SYM(pcap_set_buffer_size, FALSE),
|
|
SYM(pcap_activate, TRUE),
|
|
SYM(pcap_statustostr, TRUE),
|
|
#endif
|
|
{ NULL, NULL, FALSE }
|
|
};
|
|
|
|
GModule *wh; /* wpcap handle */
|
|
const symbol_table_t *sym;
|
|
|
|
wh = ws_module_open("wpcap.dll", 0);
|
|
|
|
if (!wh) {
|
|
return;
|
|
}
|
|
|
|
sym = symbols;
|
|
while (sym->name) {
|
|
if (!g_module_symbol(wh, sym->name, sym->ptr)) {
|
|
if (sym->optional) {
|
|
/*
|
|
* We don't care if it's missing; we just
|
|
* don't use it.
|
|
*/
|
|
*sym->ptr = NULL;
|
|
} else {
|
|
/*
|
|
* We require this symbol.
|
|
*/
|
|
return;
|
|
}
|
|
}
|
|
sym++;
|
|
}
|
|
|
|
|
|
has_wpcap = TRUE;
|
|
}
|
|
|
|
/*
|
|
* The official list of WinPcap mirrors is at
|
|
* https://www.winpcap.org/misc/mirrors.htm
|
|
*/
|
|
char *
|
|
cant_load_winpcap_err(const char *app_name)
|
|
{
|
|
return g_strdup_printf(
|
|
"Unable to load WinPcap (wpcap.dll); %s will not be able to capture\n"
|
|
"packets.\n"
|
|
"\n"
|
|
"In order to capture packets, WinPcap must be installed; see\n"
|
|
"\n"
|
|
" https://www.winpcap.org/\n"
|
|
"\n"
|
|
"for a downloadable version of WinPcap and for instructions on how to install\n"
|
|
"WinPcap.",
|
|
app_name);
|
|
}
|
|
|
|
char*
|
|
pcap_lookupdev (char *a)
|
|
{
|
|
if (!has_wpcap) {
|
|
return NULL;
|
|
}
|
|
return p_pcap_lookupdev(a);
|
|
}
|
|
|
|
void
|
|
pcap_close(pcap_t *a)
|
|
{
|
|
g_assert(has_wpcap);
|
|
p_pcap_close(a);
|
|
}
|
|
|
|
int
|
|
pcap_stats(pcap_t *a, struct pcap_stat *b)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_stats(a, b);
|
|
}
|
|
|
|
int
|
|
pcap_dispatch(pcap_t *a, int b, pcap_handler c, guchar *d)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_dispatch(a, b, c, d);
|
|
}
|
|
|
|
int
|
|
pcap_snapshot(pcap_t *a)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_snapshot(a);
|
|
}
|
|
|
|
int
|
|
pcap_datalink(pcap_t *a)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_datalink(a);
|
|
}
|
|
|
|
#ifdef HAVE_PCAP_SET_DATALINK
|
|
int
|
|
pcap_set_datalink(pcap_t *p, int dlt)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_set_datalink(p, dlt);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
pcap_setfilter(pcap_t *a, struct bpf_program *b)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_setfilter(a, b);
|
|
}
|
|
|
|
char*
|
|
pcap_geterr(pcap_t *a)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_geterr(a);
|
|
}
|
|
|
|
int
|
|
pcap_compile(pcap_t *a, struct bpf_program *b, const char *c, int d,
|
|
bpf_u_int32 e)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_compile(a, b, c, d, e);
|
|
}
|
|
|
|
int
|
|
pcap_compile_nopcap(int a, int b, struct bpf_program *c, const char *d, int e,
|
|
bpf_u_int32 f)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_compile_nopcap(a, b, c, d, e, f);
|
|
}
|
|
|
|
int
|
|
pcap_lookupnet(const char *a, bpf_u_int32 *b, bpf_u_int32 *c, char *d)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_lookupnet(a, b, c, d);
|
|
}
|
|
|
|
pcap_t*
|
|
pcap_open_live(const char *a, int b, int c, int d, char *e)
|
|
{
|
|
if (!has_wpcap) {
|
|
g_snprintf(e, PCAP_ERRBUF_SIZE,
|
|
"unable to load WinPcap (wpcap.dll); can't open %s to capture",
|
|
a);
|
|
return NULL;
|
|
}
|
|
return p_pcap_open_live(a, b, c, d, e);
|
|
}
|
|
|
|
#ifdef HAVE_PCAP_OPEN_DEAD
|
|
pcap_t*
|
|
pcap_open_dead(int a, int b)
|
|
{
|
|
if (!has_wpcap) {
|
|
return NULL;
|
|
}
|
|
return p_pcap_open_dead(a, b);
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_BPF_IMAGE
|
|
char *
|
|
bpf_image(const struct bpf_insn *a, int b)
|
|
{
|
|
if (!has_wpcap) {
|
|
return NULL;
|
|
}
|
|
return p_bpf_image(a, b);
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_REMOTE
|
|
pcap_t*
|
|
pcap_open(const char *a, int b, int c, int d, struct pcap_rmtauth *e, char *f)
|
|
{
|
|
if (!has_wpcap) {
|
|
g_snprintf(f, PCAP_ERRBUF_SIZE,
|
|
"unable to load WinPcap (wpcap.dll); can't open %s to capture",
|
|
a);
|
|
return NULL;
|
|
}
|
|
return p_pcap_open(a, b, c, d, e, f);
|
|
}
|
|
|
|
int
|
|
pcap_findalldevs_ex(char *a, struct pcap_rmtauth *b, pcap_if_t **c, char *d)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_findalldevs_ex(a, b, c, d);
|
|
}
|
|
|
|
int
|
|
pcap_createsrcstr(char *a, int b, const char *c, const char *d, const char *e,
|
|
char *f)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_createsrcstr(a, b, c, d, e, f);
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_SETSAMPLING
|
|
struct pcap_samp *
|
|
pcap_setsampling(pcap_t *a)
|
|
{
|
|
g_assert(has_wpcap);
|
|
if (p_pcap_setsampling != NULL) {
|
|
return p_pcap_setsampling(a);
|
|
}
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
int
|
|
pcap_loop(pcap_t *a, int b, pcap_handler c, guchar *d)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_loop(a, b, c, d);
|
|
}
|
|
|
|
void
|
|
pcap_freecode(struct bpf_program *a)
|
|
{
|
|
g_assert(has_wpcap);
|
|
if(p_pcap_freecode) {
|
|
p_pcap_freecode(a);
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_PCAP_FINDALLDEVS
|
|
int
|
|
pcap_findalldevs(pcap_if_t **a, char *b)
|
|
{
|
|
g_assert(has_wpcap && p_pcap_findalldevs != NULL);
|
|
return p_pcap_findalldevs(a, b);
|
|
}
|
|
|
|
void
|
|
pcap_freealldevs(pcap_if_t *a)
|
|
{
|
|
g_assert(has_wpcap && p_pcap_freealldevs != NULL);
|
|
p_pcap_freealldevs(a);
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_CREATE
|
|
pcap_t *
|
|
pcap_create(const char *a, char *b)
|
|
{
|
|
g_assert(has_wpcap && p_pcap_create != NULL);
|
|
return p_pcap_create(a, b);
|
|
}
|
|
|
|
int
|
|
pcap_set_snaplen(pcap_t *a, int b)
|
|
{
|
|
g_assert(has_wpcap && p_pcap_set_snaplen != NULL);
|
|
return p_pcap_set_snaplen(a, b);
|
|
}
|
|
|
|
int
|
|
pcap_set_promisc(pcap_t *a, int b)
|
|
{
|
|
g_assert(has_wpcap && p_pcap_set_promisc != NULL);
|
|
return p_pcap_set_promisc(a, b);
|
|
}
|
|
|
|
int
|
|
pcap_can_set_rfmon(pcap_t *a)
|
|
{
|
|
g_assert(has_wpcap);
|
|
if (p_pcap_can_set_rfmon != NULL) {
|
|
return p_pcap_can_set_rfmon(a);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pcap_set_rfmon(pcap_t *a, int b)
|
|
{
|
|
g_assert(has_wpcap && p_pcap_set_rfmon != NULL);
|
|
return p_pcap_set_rfmon(a, b);
|
|
}
|
|
|
|
int
|
|
pcap_set_timeout(pcap_t *a, int b)
|
|
{
|
|
g_assert(has_wpcap && pcap_set_timeout != NULL);
|
|
return p_pcap_set_timeout(a, b);
|
|
}
|
|
int
|
|
pcap_set_buffer_size(pcap_t *a, int b)
|
|
{
|
|
g_assert(has_wpcap && pcap_set_timeout != NULL);
|
|
return p_pcap_set_buffer_size(a, b);
|
|
}
|
|
|
|
int
|
|
pcap_activate(pcap_t *a)
|
|
{
|
|
g_assert(has_wpcap && pcap_activate != NULL);
|
|
return p_pcap_activate(a);
|
|
|
|
}
|
|
|
|
const char *
|
|
pcap_statustostr(int a)
|
|
{
|
|
static char ebuf[15 + 10 + 1];
|
|
|
|
g_assert(has_wpcap);
|
|
if (pcap_statustostr != NULL) {
|
|
return pcap_statustostr(a);
|
|
}
|
|
|
|
/* XXX copy routine from pcap.c ??? */
|
|
(void)g_snprintf(ebuf, sizeof ebuf, "Don't have pcap_statustostr(), can't translate error: %d", a);
|
|
return(ebuf);
|
|
|
|
}
|
|
#endif
|
|
|
|
#if defined(HAVE_PCAP_DATALINK_NAME_TO_VAL) || defined(HAVE_PCAP_DATALINK_VAL_TO_NAME) || defined(HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION)
|
|
/*
|
|
* Table of DLT_ types, names, and descriptions, for use if the version
|
|
* of WinPcap we have installed lacks "pcap_datalink_name_to_val()"
|
|
* or "pcap_datalink_val_to_name()".
|
|
*/
|
|
struct dlt_choice {
|
|
const char *name;
|
|
const char *description;
|
|
int dlt;
|
|
};
|
|
|
|
#define DLT_CHOICE(code, description) { #code, description, code }
|
|
#define DLT_CHOICE_SENTINEL { NULL, NULL, 0 }
|
|
|
|
static struct dlt_choice dlt_choices[] = {
|
|
DLT_CHOICE(DLT_NULL, "BSD loopback"),
|
|
DLT_CHOICE(DLT_EN10MB, "Ethernet"),
|
|
DLT_CHOICE(DLT_IEEE802, "Token ring"),
|
|
DLT_CHOICE(DLT_ARCNET, "ARCNET"),
|
|
DLT_CHOICE(DLT_SLIP, "SLIP"),
|
|
DLT_CHOICE(DLT_PPP, "PPP"),
|
|
DLT_CHOICE(DLT_FDDI, "FDDI"),
|
|
DLT_CHOICE(DLT_ATM_RFC1483, "RFC 1483 IP-over-ATM"),
|
|
DLT_CHOICE(DLT_RAW, "Raw IP"),
|
|
#ifdef DLT_SLIP_BSDOS
|
|
DLT_CHOICE(DLT_SLIP_BSDOS, "BSD/OS SLIP"),
|
|
#endif
|
|
#ifdef DLT_PPP_BSDOS
|
|
DLT_CHOICE(DLT_PPP_BSDOS, "BSD/OS PPP"),
|
|
#endif
|
|
#ifdef DLT_ATM_CLIP
|
|
DLT_CHOICE(DLT_ATM_CLIP, "Linux Classical IP-over-ATM"),
|
|
#endif
|
|
#ifdef DLT_PPP_SERIAL
|
|
DLT_CHOICE(DLT_PPP_SERIAL, "PPP over serial"),
|
|
#endif
|
|
#ifdef DLT_PPP_ETHER
|
|
DLT_CHOICE(DLT_PPP_ETHER, "PPPoE"),
|
|
#endif
|
|
#ifdef DLT_C_HDLC
|
|
DLT_CHOICE(DLT_C_HDLC, "Cisco HDLC"),
|
|
#endif
|
|
#ifdef DLT_IEEE802_11
|
|
DLT_CHOICE(DLT_IEEE802_11, "802.11"),
|
|
#endif
|
|
#ifdef DLT_FRELAY
|
|
DLT_CHOICE(DLT_FRELAY, "Frame Relay"),
|
|
#endif
|
|
#ifdef DLT_LOOP
|
|
DLT_CHOICE(DLT_LOOP, "OpenBSD loopback"),
|
|
#endif
|
|
#ifdef DLT_ENC
|
|
DLT_CHOICE(DLT_ENC, "OpenBSD encapsulated IP"),
|
|
#endif
|
|
#ifdef DLT_LINUX_SLL
|
|
DLT_CHOICE(DLT_LINUX_SLL, "Linux cooked"),
|
|
#endif
|
|
#ifdef DLT_LTALK
|
|
DLT_CHOICE(DLT_LTALK, "Localtalk"),
|
|
#endif
|
|
#ifdef DLT_PFLOG
|
|
DLT_CHOICE(DLT_PFLOG, "OpenBSD pflog file"),
|
|
#endif
|
|
#ifdef DLT_PRISM_HEADER
|
|
DLT_CHOICE(DLT_PRISM_HEADER, "802.11 plus Prism header"),
|
|
#endif
|
|
#ifdef DLT_IP_OVER_FC
|
|
DLT_CHOICE(DLT_IP_OVER_FC, "RFC 2625 IP-over-Fibre Channel"),
|
|
#endif
|
|
#ifdef DLT_SUNATM
|
|
DLT_CHOICE(DLT_SUNATM, "Sun raw ATM"),
|
|
#endif
|
|
#ifdef DLT_IEEE802_11_RADIO
|
|
DLT_CHOICE(DLT_IEEE802_11_RADIO, "802.11 plus radio information header"),
|
|
#endif
|
|
#ifdef DLT_ARCNET_LINUX
|
|
DLT_CHOICE(DLT_ARCNET_LINUX, "Linux ARCNET"),
|
|
#endif
|
|
#ifdef DLT_LINUX_IRDA
|
|
DLT_CHOICE(DLT_LINUX_IRDA, "Linux IrDA"),
|
|
#endif
|
|
#ifdef DLT_LINUX_LAPD
|
|
DLT_CHOICE(DLT_LINUX_LAPD, "Linux vISDN LAPD"),
|
|
#endif
|
|
#ifdef DLT_LANE8023
|
|
DLT_CHOICE(DLT_LANE8023, "Linux 802.3 LANE"),
|
|
#endif
|
|
#ifdef DLT_CIP
|
|
DLT_CHOICE(DLT_CIP, "Linux Classical IP-over-ATM"),
|
|
#endif
|
|
#ifdef DLT_HDLC
|
|
DLT_CHOICE(DLT_HDLC, "Cisco HDLC"),
|
|
#endif
|
|
#ifdef DLT_PPI
|
|
DLT_CHOICE(DLT_PPI, "Per-Packet Information"),
|
|
#endif
|
|
DLT_CHOICE_SENTINEL
|
|
};
|
|
#endif /* defined(HAVE_PCAP_DATALINK_NAME_TO_VAL) || defined(HAVE_PCAP_DATALINK_VAL_TO_NAME) || defined(HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION */
|
|
|
|
#ifdef HAVE_PCAP_DATALINK_NAME_TO_VAL
|
|
int
|
|
pcap_datalink_name_to_val(const char *name)
|
|
{
|
|
int i;
|
|
|
|
if (has_wpcap && (p_pcap_datalink_name_to_val != NULL))
|
|
return p_pcap_datalink_name_to_val(name);
|
|
else {
|
|
/*
|
|
* We don't have it in WinPcap; do it ourselves.
|
|
*/
|
|
for (i = 0; dlt_choices[i].name != NULL; i++) {
|
|
if (g_ascii_strcasecmp(dlt_choices[i].name + sizeof("DLT_") - 1,
|
|
name) == 0)
|
|
return dlt_choices[i].dlt;
|
|
}
|
|
return -1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_LIST_DATALINKS
|
|
int
|
|
pcap_list_datalinks(pcap_t *p, int **ddlt)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_list_datalinks(p, ddlt);
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_FREE_DATALINKS
|
|
void
|
|
pcap_free_datalinks(int *ddlt)
|
|
{
|
|
g_assert(has_wpcap);
|
|
|
|
/*
|
|
* If we don't have pcap_free_datalinks() in WinPcap,
|
|
* we don't free the memory - we can't use free(), as
|
|
* we might not have been built with the same version
|
|
* of the C runtime library as WinPcap was, and, if we're
|
|
* not, free() isn't guaranteed to work on something
|
|
* allocated by WinPcap.
|
|
*/
|
|
if (p_pcap_free_datalinks != NULL)
|
|
p_pcap_free_datalinks(ddlt);
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_DATALINK_VAL_TO_NAME
|
|
const char *
|
|
pcap_datalink_val_to_name(int dlt)
|
|
{
|
|
int i;
|
|
|
|
if (has_wpcap && (p_pcap_datalink_val_to_name != NULL))
|
|
return p_pcap_datalink_val_to_name(dlt);
|
|
else {
|
|
/*
|
|
* We don't have it in WinPcap; do it ourselves.
|
|
*/
|
|
for (i = 0; dlt_choices[i].name != NULL; i++) {
|
|
if (dlt_choices[i].dlt == dlt)
|
|
return dlt_choices[i].name + sizeof("DLT_") - 1;
|
|
}
|
|
return NULL;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION
|
|
const char *
|
|
pcap_datalink_val_to_description(int dlt)
|
|
{
|
|
int i;
|
|
|
|
if (has_wpcap && (p_pcap_datalink_val_to_description != NULL))
|
|
return p_pcap_datalink_val_to_description(dlt);
|
|
else {
|
|
/*
|
|
* We don't have it in WinPcap; do it ourselves.
|
|
*/
|
|
for (i = 0; dlt_choices[i].name != NULL; i++) {
|
|
if (dlt_choices[i].dlt == dlt)
|
|
return (dlt_choices[i].description);
|
|
}
|
|
return NULL;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_PCAP_BREAKLOOP
|
|
void pcap_breakloop(pcap_t *a)
|
|
{
|
|
p_pcap_breakloop(a);
|
|
}
|
|
#endif
|
|
|
|
/* setbuff is win32 specific! */
|
|
int pcap_setbuff(pcap_t *a, int b)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_setbuff(a, b);
|
|
}
|
|
|
|
/* pcap_next_ex is available since libpcap 0.8 / WinPcap 3.0! */
|
|
/* (if you get a declaration warning here, try to update to at least WinPcap 3.1b4 develpack) */
|
|
int pcap_next_ex (pcap_t *a, struct pcap_pkthdr **b, const u_char **c)
|
|
{
|
|
g_assert(has_wpcap);
|
|
return p_pcap_next_ex(a, b, c);
|
|
}
|
|
|
|
#ifdef HAVE_PCAP_REMOTE
|
|
GList *
|
|
get_remote_interface_list(const char *hostname, const char *port,
|
|
int auth_type, const char *username,
|
|
const char *passwd, int *err, char **err_str)
|
|
{
|
|
struct pcap_rmtauth auth;
|
|
char source[PCAP_BUF_SIZE];
|
|
char errbuf[PCAP_ERRBUF_SIZE];
|
|
GList *result;
|
|
|
|
if (pcap_createsrcstr(source, PCAP_SRC_IFREMOTE, hostname, port,
|
|
NULL, errbuf) == -1) {
|
|
*err = CANT_GET_INTERFACE_LIST;
|
|
if (err_str != NULL)
|
|
*err_str = cant_get_if_list_error_message(errbuf);
|
|
return NULL;
|
|
}
|
|
|
|
auth.type = auth_type;
|
|
auth.username = g_strdup(username);
|
|
auth.password = g_strdup(passwd);
|
|
|
|
result = get_interface_list_findalldevs_ex(source, &auth, err, err_str);
|
|
g_free(auth.username);
|
|
g_free(auth.password);
|
|
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* This will use "pcap_findalldevs()" if we have it, otherwise it'll
|
|
* fall back on "pcap_lookupdev()".
|
|
*/
|
|
GList *
|
|
get_interface_list(int *err, char **err_str)
|
|
{
|
|
GList *il = NULL;
|
|
wchar_t *names;
|
|
char *win95names;
|
|
char ascii_name[MAX_WIN_IF_NAME_LEN + 1];
|
|
char ascii_desc[MAX_WIN_IF_NAME_LEN + 1];
|
|
int i, j;
|
|
char errbuf[PCAP_ERRBUF_SIZE];
|
|
|
|
if (!has_wpcap) {
|
|
/*
|
|
* We don't have WinPcap, so we can't get a list of
|
|
* interfaces.
|
|
*/
|
|
*err = DONT_HAVE_PCAP;
|
|
if (err_str != NULL)
|
|
*err_str = cant_load_winpcap_err("you");
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef HAVE_PCAP_FINDALLDEVS
|
|
if (p_pcap_findalldevs != NULL)
|
|
return get_interface_list_findalldevs(err, err_str);
|
|
#endif
|
|
|
|
/*
|
|
* In WinPcap, pcap_lookupdev is implemented by calling
|
|
* PacketGetAdapterNames. According to the documentation
|
|
* I could find:
|
|
*
|
|
* https://www.winpcap.org/docs/man/html/Packet32_8c.html#a43
|
|
*
|
|
* this means that:
|
|
*
|
|
* On Windows OT (95, 98, Me), pcap_lookupdev returns a sequence
|
|
* of bytes consisting of:
|
|
*
|
|
* a sequence of null-terminated ASCII strings (i.e., each
|
|
* one is terminated by a single 0 byte), giving the names
|
|
* of the interfaces;
|
|
*
|
|
* an empty ASCII string (i.e., a single 0 byte);
|
|
*
|
|
* a sequence of null-terminated ASCII strings, giving the
|
|
* descriptions of the interfaces;
|
|
*
|
|
* an empty ASCII string.
|
|
*
|
|
* On Windows NT (NT 4.0, W2K, WXP, W2K3, etc.), pcap_lookupdev
|
|
* returns a sequence of bytes consisting of:
|
|
*
|
|
* a sequence of null-terminated double-byte Unicode strings
|
|
* (i.e., each one consits of a sequence of double-byte
|
|
* characters, terminated by a double-byte 0), giving the
|
|
* names of the interfaces;
|
|
*
|
|
* an empty Unicode string (i.e., a double 0 byte);
|
|
*
|
|
* a sequence of null-terminated ASCII strings, giving the
|
|
* descriptions of the interfaces;
|
|
*
|
|
* an empty ASCII string.
|
|
*
|
|
* The Nth string in the first sequence is the name of the Nth
|
|
* adapter; the Nth string in the second sequence is the
|
|
* description of the Nth adapter.
|
|
*/
|
|
|
|
names = (wchar_t *)pcap_lookupdev(errbuf);
|
|
i = 0;
|
|
|
|
if (names) {
|
|
char* desc = 0;
|
|
int desc_pos = 0;
|
|
|
|
if (names[0]<256) {
|
|
/*
|
|
* If names[0] is less than 256 it means the first
|
|
* byte is 0. This implies that we are using Unicode
|
|
* characters.
|
|
*/
|
|
while (*(names+desc_pos) || *(names+desc_pos-1))
|
|
desc_pos++;
|
|
desc_pos++; /* Step over the extra '\0' */
|
|
desc = (char*)(names + desc_pos); /* cast *after* addition */
|
|
|
|
while (names[i] != 0) {
|
|
/*
|
|
* Copy the Unicode description to an ASCII
|
|
* string.
|
|
*/
|
|
j = 0;
|
|
while (*desc != 0) {
|
|
if (j < MAX_WIN_IF_NAME_LEN)
|
|
ascii_desc[j++] = *desc;
|
|
desc++;
|
|
}
|
|
ascii_desc[j] = '\0';
|
|
desc++;
|
|
|
|
/*
|
|
* Copy the Unicode name to an ASCII string.
|
|
*/
|
|
j = 0;
|
|
while (names[i] != 0) {
|
|
if (j < MAX_WIN_IF_NAME_LEN)
|
|
ascii_name[j++] = (char) names[i++];
|
|
}
|
|
ascii_name[j] = '\0';
|
|
i++;
|
|
il = g_list_append(il,
|
|
if_info_new(ascii_name, ascii_desc, FALSE));
|
|
}
|
|
} else {
|
|
/*
|
|
* Otherwise we are in Windows 95/98 and using ASCII
|
|
* (8-bit) characters.
|
|
*/
|
|
win95names=(char *)names;
|
|
while (*(win95names+desc_pos) || *(win95names+desc_pos-1))
|
|
desc_pos++;
|
|
desc_pos++; /* Step over the extra '\0' */
|
|
desc = win95names + desc_pos;
|
|
|
|
while (win95names[i] != '\0') {
|
|
/*
|
|
* "&win95names[i]" points to the current
|
|
* interface name, and "desc" points to
|
|
* that interface's description.
|
|
*/
|
|
il = g_list_append(il,
|
|
if_info_new(&win95names[i], desc, FALSE));
|
|
|
|
/*
|
|
* Skip to the next description.
|
|
*/
|
|
while (*desc != 0)
|
|
desc++;
|
|
desc++;
|
|
|
|
/*
|
|
* Skip to the next name.
|
|
*/
|
|
while (win95names[i] != 0)
|
|
i++;
|
|
i++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (il == NULL) {
|
|
/*
|
|
* No interfaces found.
|
|
*/
|
|
*err = 0;
|
|
if (err_str != NULL)
|
|
*err_str = NULL;
|
|
}
|
|
|
|
return il;
|
|
}
|
|
|
|
/*
|
|
* Get an error message string for a CANT_GET_INTERFACE_LIST error from
|
|
* "get_interface_list()".
|
|
*/
|
|
gchar *
|
|
cant_get_if_list_error_message(const char *err_str)
|
|
{
|
|
/*
|
|
* If the error message includes "Not enough storage is available
|
|
* to process this command" or "The operation completed successfully",
|
|
* suggest that they install a WinPcap version later than 3.0.
|
|
*/
|
|
if (strstr(err_str, "Not enough storage is available to process this command") != NULL ||
|
|
strstr(err_str, "The operation completed successfully") != NULL) {
|
|
return g_strdup_printf("Can't get list of interfaces: %s\n"
|
|
"This might be a problem with WinPcap 3.0; you should try updating to\n"
|
|
"a later version of WinPcap - see the WinPcap site at www.winpcap.org",
|
|
err_str);
|
|
}
|
|
return g_strdup_printf("Can't get list of interfaces: %s", err_str);
|
|
}
|
|
|
|
if_capabilities_t *
|
|
get_if_capabilities_local(interface_options *interface_opts, char **err_str)
|
|
{
|
|
/*
|
|
* We're not getting capaibilities for a remote device; use
|
|
* pcap_create() and pcap_activate() if we have them, so that
|
|
* we can set various options, otherwise use pcap_open_live().
|
|
*/
|
|
#ifdef HAVE_PCAP_CREATE
|
|
if (p_pcap_create != NULL)
|
|
return get_if_capabilities_pcap_create(interface_opts, err_str);
|
|
#endif
|
|
return get_if_capabilities_pcap_open_live(interface_opts, err_str);
|
|
}
|
|
|
|
pcap_t *
|
|
open_capture_device_local(capture_options *capture_opts,
|
|
interface_options *interface_opts, int timeout,
|
|
char (*open_err_str)[PCAP_ERRBUF_SIZE])
|
|
{
|
|
/*
|
|
* We're not opening a remote device; use pcap_create() and
|
|
* pcap_activate() if we have them, so that we can set various
|
|
* options, otherwise use pcap_open_live().
|
|
*/
|
|
#ifdef HAVE_PCAP_CREATE
|
|
if (p_pcap_create != NULL)
|
|
return open_capture_device_pcap_create(capture_opts,
|
|
interface_opts, timeout, open_err_str);
|
|
#endif
|
|
return open_capture_device_pcap_open_live(interface_opts, timeout,
|
|
open_err_str);
|
|
}
|
|
|
|
/*
|
|
* Append the version of WinPcap with which we were compiled to a GString.
|
|
*/
|
|
void
|
|
get_compiled_caplibs_version(GString *str)
|
|
{
|
|
g_string_append(str, "with WinPcap (" G_STRINGIFY(WINPCAP_VERSION) ")");
|
|
}
|
|
|
|
/*
|
|
* Append the version of WinPcap with which we we're running to a GString.
|
|
*/
|
|
void
|
|
get_runtime_caplibs_version(GString *str)
|
|
{
|
|
/*
|
|
* On Windows, we might have been compiled with WinPcap but
|
|
* might not have it loaded; indicate whether we have it or
|
|
* not and, if we have it and we have "pcap_lib_version()",
|
|
* what version we have.
|
|
*/
|
|
GModule *handle; /* handle returned by ws_module_open */
|
|
static gchar *packetVer;
|
|
gchar *blankp;
|
|
|
|
if (has_wpcap) {
|
|
g_string_append_printf(str, "with ");
|
|
if (p_pcap_lib_version != NULL)
|
|
g_string_append_printf(str, p_pcap_lib_version());
|
|
else {
|
|
/*
|
|
* An alternative method of obtaining the version
|
|
* number, by using the PacketLibraryVersion
|
|
* string from packet.dll.
|
|
*
|
|
* Unfortunately, in WinPcap 3.0, it returns
|
|
* "3.0 alpha3", even in the final version of
|
|
* WinPcap 3.0, so if there's a blank in the
|
|
* string, we strip it and everything after
|
|
* it from the string, so we don't misleadingly
|
|
* report that 3.0 alpha3 is being used when
|
|
* the final version is being used.
|
|
*/
|
|
if (packetVer == NULL) {
|
|
packetVer = "version unknown";
|
|
handle = ws_module_open("packet.dll", 0);
|
|
if (handle != NULL) {
|
|
if (g_module_symbol(handle,
|
|
"PacketLibraryVersion",
|
|
(gpointer*)&packetVer)) {
|
|
packetVer = g_strdup(packetVer);
|
|
blankp = strchr(packetVer, ' ');
|
|
if (blankp != NULL)
|
|
*blankp = '\0';
|
|
} else {
|
|
packetVer = "version unknown";
|
|
}
|
|
g_module_close(handle);
|
|
}
|
|
}
|
|
g_string_append_printf(str, "WinPcap (%s)", packetVer);
|
|
}
|
|
} else
|
|
g_string_append(str, "without WinPcap");
|
|
}
|
|
|
|
/*
|
|
* If npf.sys is running, return TRUE.
|
|
*/
|
|
gboolean
|
|
npf_sys_is_running(void)
|
|
{
|
|
SC_HANDLE h_scm, h_serv;
|
|
SERVICE_STATUS ss;
|
|
|
|
h_scm = OpenSCManager(NULL, NULL, 0);
|
|
if (!h_scm)
|
|
return FALSE;
|
|
|
|
h_serv = OpenService(h_scm, _T("npf"), SC_MANAGER_CONNECT|SERVICE_QUERY_STATUS);
|
|
if (!h_serv) {
|
|
h_serv = OpenService(h_scm, _T("npcap"), SC_MANAGER_CONNECT|SERVICE_QUERY_STATUS);
|
|
if (!h_serv) {
|
|
CloseServiceHandle(h_scm);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
if (QueryServiceStatus(h_serv, &ss)) {
|
|
if (ss.dwCurrentState & SERVICE_RUNNING) {
|
|
CloseServiceHandle(h_serv);
|
|
CloseServiceHandle(h_scm);
|
|
return TRUE;
|
|
}
|
|
}
|
|
CloseServiceHandle(h_serv);
|
|
CloseServiceHandle(h_scm);
|
|
return FALSE;
|
|
}
|
|
|
|
#else /* HAVE_LIBPCAP */
|
|
|
|
void
|
|
load_wpcap(void)
|
|
{
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Append an indication that we were not compiled with WinPcap
|
|
* to a GString.
|
|
*/
|
|
void
|
|
get_compiled_caplibs_version(GString *str)
|
|
{
|
|
g_string_append(str, "without WinPcap");
|
|
}
|
|
|
|
/*
|
|
* Don't append anything, as we weren't even compiled to use WinPcap.
|
|
*/
|
|
void
|
|
get_runtime_caplibs_version(GString *str _U_)
|
|
{
|
|
}
|
|
|
|
#endif /* HAVE_LIBPCAP */
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|